Karachi- Sporadic incidents of firing continued in Karachi today, where four more people were killed just within two hours. Police and rescue teams said two sack-packed bodies were found in Mewa Shah Graveyard and another near Lasbela Bridge today morning. A man was killed in Manghopir locality when unidentified bike riders fired shots on his car. The four killings took place in the city just within two hours. They victims could not be identified as their bodies were shifted to civil hospital for medico-legal formalities.